Knobbed nut



FZ D. WENN KNOBBED NUT wir.. lkw

Filed July 15, 192? ATTO EN EYA Patentes Aug. 7, 192s. i

TED STATES PORATION OF NEW YORK. i

appiication sied July 1c,f

This invention more particularly relates to improvements in the designand fabrication of ornamental threaded' nuts such as prop nuts and thelike equipped with an enare extensively used to screw on and trim thefree ends of vehicle top props which props are conventionally fastenedto the opposite sides of theV vehicle andrespective y serve as ulcrumedsupport or'carrying the complementary lower ends Vof their collapsibletop structure.` Prop nuts also find a rather wide application forholding in place either orboth ends of other top members, likewiseornamental dummy joints such as are now being largely employed toembellish non-'collapsible or closedv automobile tops, and for manysimilar purposes.

One 'object' of the `present invention is to provide `for a simpledurable nut `of the char` acter indicated and also to devise an intervlocked connection of the non-slip type between the nut body and achainbered sheet metal knob adaptedto positively hold these componenteleinentsin fixed interlocked reL lation while the nut is beingmanipulated. l/Vhen used upon motor vehicles, the'builtup knob elementsfoundY inthe `conventional `type of prop nuts are likely` to'loosenupunder long repeated vibration from road jars and this in turn tends toset up obnoxious rattle about the car. Itis the further purpose ofthe'present invention to overcome this defect and insure a rattle-proofjoint between the nut and its knob, An additional aim is to provide foran economical methlod of vmaking improved prop nuts and the like; tothis end and `thefaccomplishment of other new and useful results,thisinvention consists in novel constructive Jfeatures', organizationand the making up of its sev-` eral elements, all of which willhereinafter be described in detail.

Reference is had to the accompanying one i sheet of drawings which areillustrative of a specific embodiment of our invention more particularlyas applied to motor vehicles, in which like characterslofreferenceindicate FLOYD D. WENN AND Banen ivi. STANNARD,

'ro THE BREWER-TITCHENER conronarron,

Vlike pa'rtsin` the or BINGHAMroN, NEW YORK, AssIeNoas or con'rminn,`NEW YORK, a con- KNOBBED NUT.

192?. Serial No1'206,194.

yFig. l is an elevational View of our prop nut as applied in holding adummy joint to a coach or sedan type ofmotor vehicle top.

Fig. 2' represents an enlarged detail of a knobbed nutassembled upon itsprop ironas taken along line 2-#2 of Fig. i

Fig. 3 illustrates an assembly of the prop nut body together with itsdecorative knob while'Fig. 4 is a transverse section thereof astakenalong Yline 4 4 ofFig. 3; Fig. 5 is an 'end View otV a plain vcircularcontour that may be given to the crown plate or cover face achamberedknob.

Figs. G and 7 show constructive details of the nut bodyfof our device. fY

Figs. 8 and 9 show the manner in which lthe backing disc of our knob maybe formed up prior to assembly upon said nut body.

several views, and in which drawings:

VReferring `to the `constructive details of f` our product and itscharacteristic application, the letter A1 denotes a closed automobiletop such `for instance as is commonly used on a coach'or sedan type ofmotor vehicle while A2 representsthe body thereof.

There is here. .shown a dummy joint A3 whose lower and upper aperturedends may be mounted upon a conventional prop iron suchas A4 preferablysecured by leg ianges A., tothe respective body sides. It will beobvious that such irons may be similarly Aused in connection withfolding tops to car'- ry the main support bow or the like and that thepresent disclosureis merely illustrative 'of the general purposes of ourimproved nut.

The outer or free end of said prop iron A,

is usually provided with overhanging screw threads vA6 and our knobbednut designated -as a whole by B, may be screwed or otherbody C adaptedto fixedly engage a cupshaped backing discD and about the periphery ofwhich disc may be crimped a crown plate E.

Taking up first a detailed description ot the nut element of our device,its elongated body C is preferably turned up and tapped as a screwmachine product out of brass rod or other non-ferrous metal stock Whichfacilis tates production and also serves to make the C; is here shown asof'hexagon contour but it may also be given a square or any othersuitablev polygonal or eccentric-like cross-V sectional profile adaptedtov partially or Wholly encompass the thread axis; one or more unevensurface projections or high points such asC3 are thereby made to extendradially beyond the hex flats C2 or similar innermost point ofther'profile Vthat. may be given the nut. In'order to economize uponmaterial, themaximum diametral dimension of all. kour finished nutportions are kept Within the size of said polygonal stock, andthepreferred knob attachmentelement is afforded by undercutting .saidstock. To this end, one end of said nut body may furtherfbe'providedwith an annular neck or tubular extensions C5 Whose outsidek diameterispreferably shaped `up by lathe turning said projection C3 down to form anutshoulder CG and the resulting upstanding face is kept in a squaredflat relation with respect to the nut axis. The insidediameter of saidextension Vmay be counterbored as lat C,A for the purpose of reducing`its.thickness-*and facilitating the Vriveting thereof as'will appearpresently. f

The `backing member D Vdetailed in Figs.

Y 8 and?, comprises a centrally disposed disc portion D1J which ishereshownas having a cupped up rim VD2 flaringoutwardly .toward itsperiphery. The flat face of said disc may be provided with a depressedpocket Ior other type, of socket D? Whose outline is preferably made toconform rather closely to aportion of the polygonal external Vsurfaceshape given to the nut body C; the :base ofsaid socket maythenbe swagedor de? formed into intimate contact With the polygo-nal externalvsurfaceofthe nut to besecurely locked thereto. Said socket may also be provided`with acentrally located aperture of any suitable shape such as D4adapted to fixedly secure `the nut body in its interlocked position; inthe present instance such sec-ureg ment is aii'orded by the use of acircular aperture which ismtended to receive the headless g y ldisc.

vsaid socket, the neck C5 may then be expanded, riveted, sivaged, prickpunched or otherwise secured to said ledge D5 in the manner indicated'for instance byV Fig. 4. The embedded prop nut elements thereby becomesecurely ljoined together as a unit, when the body C maybe initiallyscrewed upon a suitable thread `through .the medium of said disc D andtightly brought [home 'by the use of a Wrench applied to thebodyfhexsurface.

It is thought thepurpose and application of our improved prop nutwill beobvious from the preceding description. It Will also be understood `thatvarious changesin the disclosed arrangement of details maybe resortedlto, all Without departing from theV .spirit and scope of the-inventionheretofore ,described and pointed out linthe appended claims. i

Claims:

.1.111 a lmObbednut, Van.internallyv screu threaded nut body memberprovided with a tubular extension and a polygonal external surface, anda backing dischaving an apertured socket formed therein, the )aperturebeing shaped to fit'the extension ofthe nut ,and thel extension beinglocked intoengage.-

ment-'With the margin of the aperture,iand the base of thesocketfittingfthe polygonal surface of theinut when syvaged in place.

2. In a'knobbed nut, an internally screw threadednut body memberprovided with a tubularA extension anda polygonal external 'Y surface, abacking disc having an apertured socket formed therein, the, aperturebeing .shaped to fit the extension of the nut and the extension beinglocked into engagement `with the margin Vof, the aperture and the baseof the socket iitting the polygonal surface of thenut Whengsvvaged inplace, and a crown plate engaging the peripheryhof the backingIrl-testimony whereof, WeV have signed` our names to thisspecification.,V

. FLoYD D.: WENN-. BRUCE M; srxNNxaD.

